* { margin: 0; padding: 0;}
.fl {
	float: left;
}
.fr {
	float: right;
}
body {
	overflow: hidden;
}
.panel {
	position: absolute;
	width: 100vw;
	height: 100vh;
}
.hide {
	display: none;
}
.numone {
	background: #000 url(../img/product/bg1.png) no-repeat;
	background-size: 100% 100%;
}
.fontBox {
	width: 50%;
}
.fontfff {
	color: #fff;
}
.fontBox h2 {
	font-size: 28px;
	letter-spacing: 10px;
	margin: 45% 0 0 20%;
	font-weight: normal;
}
.fontBox p{
	letter-spacing: 2px;
	margin-left: 20%;
	line-height: 30px;
}
.imgBox {
	width: 50%;
	padding-top: 4%;
	padding-left: 8%;
	box-sizing: border-box;
}
.numtwo {
	background: #fff url(../img/product/bg2.png) no-repeat;
	background-size: 100% 100%;
}
.numthree {
	background: #000 url(../img/product/bg3.png) no-repeat;
	background-size: 100% 100%;
}
.numfour {
	background: #fff url(../img/product/bg4.png) no-repeat;
	background-size: 100% 100%;
}



.nav {
  position: absolute;
  left: 80px;
  width: 200px;
  height: 200px;
  top: 50%;
  margin-top: -100px;
  z-index: 5;
}

.nav>ul>li {
  list-style: none;
  cursor: pointer;
  position: relative;
  margin-top: 30px;
}

.nav>ul>li::before {
  content: ' ';
  position: absolute;
  display: block;
  width: 0px;
  height: 0px;
  padding: 0px;
  border-radius: 50%;
  border: 2px solid #a6a6aa;
  top: 23px;
  left: -30px;
}

.nav>ul>li>a {
  transition: .8s;
  opacity: 0;
  line-height: 50px;
  font-size: 16px;
  font-weight: bold;
  filter: blur(10px);
  text-decoration: none;
}

.nav>ul>li.active>a {
  opacity: 1;
  color: white;
  filter: blur(0px);
}

.nav>ul>li.active::before {
  padding: 5px;
  top: 18px;
  left: -35px;
  border-color: white;
}

.nav>ul:hover a {
  opacity: 1;
  color: #646464;
  filter: blur(0px);
}

.nav>ul>li:hover>a {
  color: white;
}

.nav>ul>li:hover::before {
  padding: 5px;
  top: 18px;
  left: -35px;
  border-color: white;
}
/**/

.navBlack {
  position: absolute;
  left: 80px;
  width: 200px;
  height: 200px;
  top: 50%;
  margin-top: -100px;
  z-index: 5;
}

.navBlack>ul>li {
  list-style: none;
  cursor: pointer;
  position: relative;
  margin-top: 30px;
}

.navBlack>ul>li::before {
  content: ' ';
  position: absolute;
  display: block;
  width: 0px;
  height: 0px;
  padding: 0px;
  border-radius: 50%;
  border: 2px solid #000;
  top: 23px;
  left: -30px;
}

.navBlack>ul>li>a {
  transition: .8s;
  opacity: 0;
  line-height: 50px;
  font-size: 16px;
  font-weight: bold;
  filter: blur(10px);
  text-decoration: none;
}

.navBlack>ul>li.active>a {
  opacity: 1;
  color: #000;
  filter: blur(0px);
}

.navBlack>ul>li.active::before {
  padding: 5px;
  top: 18px;
  left: -35px;
  border-color: #000;
}

.navBlack>ul:hover a {
  opacity: 1;
  color: #646464;
  filter: blur(0px);
}

.navBlack>ul>li:hover>a {
  color: #000;
}

.navBlack>ul>li:hover::before {
  padding: 5px;
  top: 18px;
  left: -35px;
  border-color: #000;
}

.mouse {
  z-index: 3;
  position: absolute;
  bottom: 50px;
  width: 40px;
  left: 50%;
  margin-left: -20px;
}

.mouse-wheel {
  position: absolute;
  width: 8px;
  top: 0px;
  left: 50%;
  margin-left: -4px;
  animation: mouse-wheel 2s 2s infinite;
}

@keyframes mouse-wheel {
  0% {
    opacity: 0;
  }
  50% {
    -webkit-transform: translateY(20px);
    transform: translateY(20px);
    opacity: 1;
  }
  100% {
    -webkit-transform: translateY(60px);
    transform: translateY(60px);
    opacity: 0;
  }
}